Calculation and Analysis Techniques of Foundation Pit Engineering Based on FLAC3D

Two-dimensional and three-dimensional calculation methods of deep excavation, and section design programs were developed to meet the needs of foundation design and calculation with the Three-dimensional finite difference software FLAC3D. Force calculation, section design and stability analysis, and force diagram generation of support structure can be done in accordance with the requirements of different specifications by the programs. A meshing method is developed for arbitrary planar domain, and the three-dimensional stratigraphic model is established. Considering the interaction between soil and structure, the force and deformation of supporting structure and ground settlement can be accurately calculated. The results can provide a useful assistance for design and can also be used as the basis for scientific analysis